Vacuum condensation control



Aug. i, 93. v. ROSENHAGEN vAUUM coNDENsATIoN CONTROL Filed April 22. 1927 31a/vanto@ Patented Aug. 18, 1931 f UNITED STATES PATENT OFFICEl VICTOR EOSENHAGEN, OE BELLEVUE, KENTUCKY, AssrGNoE. OE ONE-EOUETE To WILLLAM C. BUTEN AND ONE-FOURTH To OTTO WOLEE, BOTH or NEWPORT, KEN- TUCKY, AND ONE-FOURTH To eUsTAvE M. REINLNGEE, OE FORT MITCHELL,

p KENTUCKY Application filed Api-i1 22,

- This invention relates to a condensation vacuum and water feed pump apparatus and is particularly for use in steam heating systems of various kinds.

An object of the invention is to provide a device for the purpose stated, which through the agency of a vsuitably driven centrifugal pump, takes its water from a circulating tank and discharges it into the same tank, said tank serving also' to receive condensation from the system which is drawn into the circuit through the agency of said pump.

'Another object is to provide a device for the purpose statedwhich will effectively control the water in the circulating tank so that upon reaching a high water level in the tank, the'device automatically conditions itself for discharging water from the tank into a Y, boiler.

,. vice will again automatically condition itself for discharging into `the tank.

Another' object is to provide a device of this kind wherein the operation is entirely automatic and wherein sediment andv dbris picked up in the system can not affect the operation of the device.

These and other objects are attained by the means described herein and disclosed in the accompanying drawing in which the ligure represents an elevational view of an installa-l tion of the invention, part being broken away, and part being shown in cross section.

The device of the invention is herein disclosed in a simple, practical embodiment,

and it will be understood that modifications VACUUM CONDENsATroN CONTROL 1927. Serial No. 185,873.

switch control for the motor which is not shown and which forms no part of this invention. The tank 5 has an outlet 10 near the bottom thereof and said outlet serves to feed the pump 8 from the tank. lThe water from tank 5 is pumped through nozzle 11 into tube l2 through which it is forced upwardly through a pipe 13 into the interior of the chamber 14 in valve 15. The body 15 has a cored-out portion forming the chamber 14 and is conveniently formed by providing a cylinder` 16 interiorly of the tubular valve 15 thereby forming aclosure forpthe chamber 14. Cylinder 16 has near its base a plurality ofV large ports 17 into which water from the pipe i3 and chamber 14 may flow into the circulating tank 5f. The water being forced through nozzle 11 tends tocreate a vacuum in chamber 18 of the enlarged n housing 19 in which the :nozzle 11 is located'. A pipe connection 20 having check valve 200 effects communication between the bottom of condensation receiver 6 and the chamber 18 so that the products of condensation entering said receiver from the system are immediately drawn up through pipe 2O and are carried ,along with the circulating stream through the valve chamber and into the circulating tank. Within the tank 5 is mounted an open topped ioat casing 21 which may be rigidly mounted by Ameans of brackets 22, said casing having a port 23 disposed in the side wall thereof intermediate high water level line 24 and low water level line 25. A siphon tube indicated generally as 26 is connected to port 23 and then extends vertically upward to the high water level 24 where the tube 26 is fiattened and spread to provide a wide, flat, shallow passage 27. The depending portion 2S of Siphon tube 26 has its free open end 29 disposed at an appreciable distance below the desired water level 25.

W'ithin the float casing 21 are fixed guide rods 30 upon which the float 31 is freely slidable. The float 31 has a center tubular bore or way 32 through which extends al rod 33 having a fixed collar or iiange 34 at the lower end thereof and an adj ustablecollar 35 which may be positioned at various placesupon rod 33 above the top of oat 31. From the foregoing it will be apparent that water entering the circulating tank through pipe 13, and valve body 15, will gradually rise in said tank about the casing 21 and will also rise in pipe 23, so that upon attaining the high water level 24 it will overflow through A'the broad', shallow and restricted passage 27, thereby creating siphonic action so as to rapidly eX- haust the water from tank 5 into the body of casing 21. As the water risesV in casing 2l' the float 31 rises independently of rod 33 until said iioat strikes the botto-m face of collar 35. As water continues to enter casing 21 the float will then raise rod 33 and effeet closing of the valve ports 17 through which water enters thel tank 5. rlhe control and actuating mechanism will now be described.

The valve bod'y 15 which is rigidly supported within the tank 5 has a perforate top plate 36 to which is secured a bracket 37 which provides a pivotal mounting upon pin 38k for' a rocker arm 39. At one end 40 of the reckerarm 39 is a pivoted link. connection 41 through which. movement may be imparted from rod 33. tothe rocker arm. rEhe rocker arm 39 has apiston rod 42 pivotally connected thereto on the opposite side ot pivotal mounting 33 and this piston rod depends through opening- 43 in cover 36 into the-hollow interior of cylinder 16 which forms the inner Wall of the valvev bod-y. A sleeve val-ve- 44 is supported from piston rod 42 andk is adapted for slidable movement within the cylinder 16 Yfor effecting opening and closing of the ports 17 which control discharge trom the valve chamber 14into the tank 5.

When the rod 33 is raised under the influence of iioat 31, the rocker arm 39-is moved upward at the end 40 while the opposite end is lowered, thereby causing piston rod 42 to lower the valve sleeve 44 which elects` closing ot ports 17. A suitable adjustable counter weight 45 is provided adjacent thev connection ot arm 39 with pis-ton rod 42 so that a nice balance be attained by the weight of valve sleeve 44 and its associated parts on the one hand and the float 3.1 on the other hand. Y

As soon as the valve sleeve 44 is suiliciently lowered to substantially close ports 17, the water which continues to flow into. valve chamber 14 from pipe 13 is forced through pipe 46 which communicates with chamber 14 and from thence through a suitable connecting pipe 47 which serves as a feed pipe for the boiler (not shown).

When the ports 17 are closed, the continued operation of pum-p 8- draws water fronithe bottom of tank 5 and forces it through` pipes 12 and 13, chamber 14, and pipes 46 and 47, without allo-wing any appreciable amount to return to the tank, thus lreducing the volume of water in the tank 5 and finally exhausting. the supply to` a point below low water level 25. As the water recedes in the circulating tank, the water also recedes in the float casing by way of siphon pipe. The receding water allows float 31 to move downwardly on rod 33 which remains stationary, and thus causes the valve 44 to remain closed until the float strikes the bottom 'fiange or collar 34 on the rod. When the ioat reaches the bottomv of rod 33, the continued outflow oi:Y water from casing'21 removes the buoyant force from the float and permits it to overbalance the valve sleeve 44 and its associated parts, so that feed valve is. raised and the. continuously circulating water again Vflows out of ports 17 into the tank and ceases to flow to the boiler through pipes 46 and 47.

Cylinder 16. and valvev sleeve 44. are preferably formed Vof non-corrodibleT materials so that they7 may slide. freely with minimum of friction and for that. reason responsive? to the influence ot-rising and lowering water in the circulating tank 5.. 1t will also be understood that the valve may be caused to operateoftenen The collar 35may-be ad usted closer to the top ot loat 31 and Secured in suchl position. by any suitablemeans such. as set screws 350.. It will be` apparent that with col-lar ata lesser distance7 from the bottom of rod 33, the float 31 will strike said collar when a relatively lesser quantityA of water has entered casing 21, thereby shutting-off valve 44 and discharging o-iitener to, the boiler. It will be understood, of course, that the products of condensation-are being continually drawn from the system and rece-iver 6- and are bein-g'- added tothe volume o-i' water in the circulating tank. 5.

Sediment and dbrisy find no place tov lodge within the valve chamber 14 because they are `flushed out into the circulating tank through the large ports 17'. The sediment can notfindits way into float casing 21 be,- causethe siphonic action isnotgreat enough to draw heavy particles through pipe 2.6. and also` because of the free substantially frictionless mounting of float v31 upon its guide rods 30. and rod 33.l The device is so arranged that it is incapable if improper adjustment, because, regardless of the adjustment of counter weight 45 or collar 35, the siphonic action will take place-in opposite directions and will regularly open andclose ports 17 and thus eliminate all possibility of overflow oi the tank 5. The device may therefore be said to be foo-l proof and is ready for operation at any time without, a reconditioning.. The simplicity ot the device permits ot' sturdy parts which are not liable to get out of order and which are nevertheless subject to a nicety of balance. which insures continuous automatic operation.

lllhat is claimed is 1. In a device of the class described the combination of a tank adapted to contain liquid, a float casing in the tank, a float in said casing, a siphon tube connected at its one end with the casing and at its opposite end with the interior of the tank below a normal low liquid level, the top portion of the siphon tube being co-incident with the high liquid level, a liquid supply connection, a two-way valve in said connection and means comprising a pivotally mounted arm for actuating the valve and arranged to be actuated by the iioat in the casing after predetermined movement of said float.

2. In a device of the class described the combination with a tank of a tubular valve body having an annular chamber therein, ports in the interior cylindrical wall of said body, a sleeve valve reciprocal upon said cylindrical inner wall of the body for controlling the ports therein, a pivotally mounted arm, means connecting the sleeve valve and said arm, a float casing beneath an end of said arm and disposed in the tank, a siphonic connection between the tank and casing, a rod pivotally suspended from the arm into the casing, a float in the casing adapted for independent reciprocation on the depending rod and collars adapted to impartmovement of the float to the rod by a pre-determined rising and lowering of water in the casing whereby the sleeve valve is actuated.

3. In combination, a tank, a valve adapted to be actuated for selectively directing liquid into the tank or to a point outside thereof, means for directing liquid into the valve, a pivotally mounted rocker arm connected to the valve and means comprising` a casing having siphonic communication with the tank and a loat having limited free movement in said casing for actuating the rocker arm.

4. A liquid level control comprising a casing adapted to be disposed in a body of liquid, a siphon tube for filling and emptying the casing of liquid from said body, a float in said tank, a rod extending through the float and movable independently thereof, means on the rod for abutment by the float whereby the rod may be intermittently actuated in opposite directions as the float reaches predetermined positions, a two way valve for directing liquid into the tank or to a point outside thereof, and an arm having a fixed pivotal mounting and connected at its opposite ends to the rod and valve.

5. In an automatic control the combination of a tank for receiving liquid, a two way valve controlling liquid to the tank, and a float mechanism adapted to actuate the valve when the liquid in the tank reaches predetermined high and low levels in said tank said mechanism comprising a casing having siphonic connection with the tank, a float having limited free movement in the casing and a rocker arm connected to the valve and arranged for deferred but rapid movement by the float after predetermined movement of the float.

6. The combination with a liquid circulating tank having uncontrolled outlet pipe and inlet pipe, of a valve in the inlet pipe and capable of diverting liquid from the tank, a ioat casing in the tank and having siphonic communication with the interior of the tank, an actuating linkage for the valve depending into said casing and a float in the casing arranged for limited independent movement on the depending portion of the linkage whereby the valve is permitted to remain stationary while the inflowing liquid attains a. high level determined by the top of the siphon and the casing accumulates a predetermined quantity of liquid for moving the float therein independent of the linkage, further rise of the liquid in the casing serving to actuate the linkage and valve to effect substantially instantaneous closing of the valve to shut off further inflow of liquid into the circulating tank and permitting the uncontrolled outlet to discharge liquid from the tank, the siphonic communication between the tank and ioat casing again permitting limited free movement of the float on the linkage whereby to attain deferred but instantaneous opening of the valve.

In testimony whereof, I have hereunto subscribed my name this 16th day of April, 1927.

VICTOR ROSENHAGEN. 

